The module will return a 15-digit number. Copy and save this original IMEI for your records. Step 3: Enter Production/Engineering Mode
To interact with the Quectel EC25 module, you must establish a direct serial communication link to its AT command interface. Required Hardware
Or use:
Send:
AT+CGSN
Some older EC25 firmware versions (pre-2019) or custom engineering builds from Quectel allow AT+EGMR . If you have access to such firmware:
A Quectel EC25 module connected to a PC via a USB development kit, PCIe adapter, or a router supporting serial/TTY bridge communication. quectel ec25 change imei
Reboot the module for the changes to take effect.
Your current (which you can find by running ATI or AT+QGMR )
Type AT and press Enter. You should receive an OK response. The module will return a 15-digit number
Mounted on a development board, PCIe evaluation board, or embedded inside a cellular router with exposed serial access.
Change IMEI to 350123456789012 :
Once connected, type: